/*
 * Copyright (c) 2008 Sergey Rudchenko <sergey.rudchenko@gmail.com>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "missile.h"
#include "sprite.h"
#include "game.h"

#include <stdlib.h>
#include <math.h>

struct missile* new_missile(SDL_Surface* img, double speed)
{
    struct missile* obj = malloc(sizeof(struct missile));
    obj->sprite = new_sprite(img);
    obj->_speed = speed;
    return obj;
}

void free_missile(struct missile* obj)
{
    free(obj->sprite);
    free(obj);
}

int missile_update(struct missile* missile, struct game* ctx, Uint32 dticks)
{
    struct sprite* spr = missile->sprite;

    if (spr->y < -spr->image->h || spr->y > ctx->area.h)
        return 0;

    sprite_move(missile->sprite, 0, missile->_speed * dticks);
    return 1;
}

